Menus are a collection of links (menu items) used to navigate a website. The menu module provides an interface to control and customize the powerful menu system. Menus are primarily displayed as a hierarchical list of links using a highly flexible blocks feature. Each menu automatically creates a block of the same name. By default, new menu items are placed inside a built-in menu labelled Navigation, but administrators can also create custom menus.

Themes or Templates generally provide out-of-the-box support for two menus commonly labelled primary links and secondary links. These are sets of links which are usually displayed in the header or footer of each page (depending on the currently active theme). Any menu can be designated as the primary or secondary links menu via the menu settings page.